61808720

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8681}}^1$

素因数の和:8783

約数の個数: 40

約数和(自身を含む): 145336680

約数和(自身を除く): 83527960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 8681, 17362, 34724, 43405, 69448, 86810, 138896, 173620, 347240, 694480, 772609, 1545218, 3090436, 3863045, 6180872, 7726090, 12361744, 15452180, 30904360, 61808720]

約数ペア:

[(1, 61808720), (2, 30904360), (4, 15452180), (5, 12361744), (8, 7726090), (10, 6180872), (16, 3863045), (20, 3090436), (40, 1545218), (80, 772609), (89, 694480), (178, 347240), (356, 173620), (445, 138896), (712, 86810), (890, 69448), (1424, 43405), (1780, 34724), (3560, 17362), (7120, 8681)]